PT-2025-28883 · Linux+5 · Linux Kernel+5

Anubis

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Published

2025-07-09

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Updated

2026-05-22

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CVE-2025-38255

CVSS v3.1

5.5

Medium

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions: Linux kernel versions prior to 6.15.0-02023-gadbdb95c8696-dirty #1238
Description: A NULL pointer dereference issue was identified in the group cpus evenly() function within the lib/group cpus module of the Linux kernel. This issue occurs when numgrps is set to 0, resulting in a dereference of a NULL pointer after kcalloc() returns ZERO SIZE PTR. The fix involves adding a check for numgrps within group cpus evenly() and returning NULL directly if it is zero.
Recommendations: Update the Linux kernel to version 6.15.0-02023-gadbdb95c8696-dirty #1238 or a later version to resolve this issue.

Exploit

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

BDU:2025-10751
CVE-2025-38255
MGASA-2025-0218
MGASA-2025-0219
OESA-2026-2417
OESA-2026-2418
OPENSUSE-SU-2025:20081-1
SUSE-SU-2025:03600-1
SUSE-SU-2025:03601-1
SUSE-SU-2025:03602-1
SUSE-SU-2025:03633-1
SUSE-SU-2025:03634-1
SUSE-SU-2025:20851-1
SUSE-SU-2025:20861-1
SUSE-SU-2025:20870-1
SUSE-SU-2025:20898-1
SUSE-SU-2025:21074-1
SUSE-SU-2025:21139-1
SUSE-SU-2025:21179-1
SUSE-SU-2025:3725-1
SUSE-SU-2025:3751-1
USN-7833-1
USN-7833-2
USN-7833-3
USN-7833-4
USN-7834-1
USN-7856-1
USN-8028-1
USN-8028-2
USN-8028-3
USN-8028-4
USN-8028-5
USN-8028-6
USN-8028-7
USN-8028-8
USN-8031-1
USN-8031-2
USN-8031-3
USN-8052-1
USN-8052-2
USN-8074-1
USN-8074-2
USN-8126-1

Affected Products

Astra Linux
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu